The budget airline fell into the red for the three months to the end of December.
'We believe this lower fare environment will continue to shake out more loss making competitors.'
EasyJet and Jet2 fared much better in the survey.
One in six Ryanair customers has been on a flight with a disruptive passenger.
A frustrated frequent flyer came up with an ingenious plan to get around Ryanair’s restrictive new baggage rules. He pulled in a friendly tailor to give an old coat a new life as wearable on-board storage.
Delsie Gayle criticises firm’s 'disrespect and lack of any interest at all in my well-being'.